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单项选择题

机车传动轴每行驶补充3#锂基脂（）

A.1000KM或3个月
B．1500KM或6个月
C．2500KM或3个月
D．1500KM或3个月
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未知题型
1. Pigs roll in mud and cows graze on grass all day. 2. Genetically engineered seeds produce food that has been proven to cause cancer and other problems in lab animals. 3. Some farmers refuse to use any pesticides, herbicides, or genetically modified seeds. 4. There are confined animal feeding operations. 5. Conventional farmers use chemical fertilizers to make plants grow. 6. Organic or local food is more expensive than conventional food. 7. Food is irradiated to last longer. 8. Harmful chemicals seep into the ground, or run off into our waterways, poisoning our water.
单项选择题
先週、国立図書館からビデオを（）借りてきました
A.2枚
B．2本
C．2冊
D．2階
单项选择题
造成土壤次生盐碱化严重地区南方少、北方多的主要原因是（）
A.北方平原面积比南方多
B．北方不合理的灌溉和春季蒸发量大于降水量
C．南方多水田，北方多旱地
D．人类大量开垦湿地
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